Percolator.



6. IE. SHMTO.

PERCOLATOR.

APPLICATION FILED MAR-27. I916.

3 Pmnm m. 4,1912.

2 SHEETS-SHEET 1.

6. 5. sumo.

PERCOLATOR.

APPLICATION mm) MAR. 27. I916.

2 SHEETS-SHEET 2.

".ranenndnsrarn oawdbn;

GEORGE E. SHATTO, 0F CLEVELAND, OHIO, ASSIGNOR TO THE KILBY MANUFACTUWG COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

JPEBGOLATOR.

aerate I 1 which the following is a full, clear, and exact description, reference being had to the accompanying drawings. I v

This invention relates toapparatus 'known to the trade as percolators which are used for the purpose of extracting soluble fats from tankage or other analogous materials such as are treated at garbage reduction plants and rendering establishments. So far as the general process is concerned,

these percolators operate according to the same principle, the tankage therewithin being subjected to the action of a solvent for grease, such as naphtha, and the solvent re- .maining in the tankage after such grease extraction being recovered by admitting steam to the percolator for the purpose of quickly vaporizing such residual solvent, the

solvent being afterward recovered in "the liquid state from the condensed steam. ft

is the object of the present invention to provide a percolator which, while operating upon the old and common principle referred to hereinbefore, is more efficient in operation than any of the others with which I am familiar and one wherein this efficiency is secured in and through a machine which is simpler in construction and more economical of production than such others.

In the drawings forming part hereof,

. Figure 1 represents a combined side elevation of and longitudinal sectional view through a percolator constructed in accordance with my invention; Fig. 2 is an end elevation of the same taken at the left hand end of Fig. 1; Fig. 3 a transverse sectional Fi s. 5'and 6 are respectively transverse and longitudinal sectional details through one of the distributing chambere Describing by reference characters the various parts illustrated herein, 1 denotes a cylindrical drum which is disposed in a substantially horizontal direction, Diametrically opposed segments 2 and 3 of this drum are longitudinally slotted and these slots are covered by perforated plates 2*- and 3 Patented Dee, d, iwi'to Application'filed March 27, 1916. Serial No. $7,031.

which extend each substantially the full length of the drum. These segments formeach the inner wall of, a fluid distributing chamber. V l

Each distributing chamber is formed by and between this inner perforated wall and an outer wall spaced therefrom. Each edge of each of the segmental slots is bounded by a metal bar 5, 5 these bars being fastened to the cylindrical wall in such manner that their inner edges overhang the slot adjacent thereto and constitute a wall or frame surrounding the slot. The edges of the perthreaded ends projecting through the edge I portions of the perforated plates and entering cooperating threaded openings.in the bars. Metal bands 6' and a screen of filtersurfaces of the plates 2 the bands serving to retain the screen in position. lit will be seen that the bars 5 and 5 form a sort of ledge which surrounds the slots 2 and 3, and this upstanding ledge forms a means for supporting the outer plates 4 and 4:, these outer plates being preferably riveted to the edges of the shell which inclose the slots as well as the bars, as indicated at 6 The lateral edges of the plates 4 and 4? are bent into engagement with the shell and riveted thereto as indicated-at 6. By this construction, distributing chambers are formed between the inner perforated plates 2 and 3, the bars 5 and 5- and the cover plates 4 and 4 Intermediate of the distributing chambers and preferably about 90 from the central portions thereof, the drum is provided with a series of. manholes 7 movable cover 8. V f 1 Y 9 denotes a' sup 1y pipe forthe solvent,

the delivery end 0 said pipe being substantially coaxial with the cylinder and having" each having a reing material ti -such as burlap--are interposed between the heads 6 and the inner tilt a rotary-joint stufing-box connection at 10 1 with one of the axially arranged branches of a 'l' 11.-' This Tmayand preferably willbe'connected rigidly to the central portion of the adjacent head 12 of the drum, as indicated at 13, whereby it is firmly secured in place. From the opposed branches of the T the pipes 14 and14 extend to and are connected with the adjacent ends of the plates 4 and 4 respectively, the delivery ends of the pipes 14 and 14 discharging into the chambers 6 and 6 respectively. The pipes 14 and 14' are provided each with a valve 15, 15 respectively whereby the supply of solvent to the chambers 6 and 6 maybe cut off, established, and controlled. The opposite end of the drum is provided with a vapor outlet pipe 16 which is connected to one branch of-the T 17 by means of a rotary-joint stufling-box connection 18. The T 17 is preferably rigidly connected to and supported by the adjacent head 19 of the drum and, from its opposite branches, the pipes 20 and 21 extend, said pipes being provided with valves 23 and 23 respectively. The pipe 20 communicates with the adjacent end of the chamber 6 being connected to the plate 4, while the pipe 21 v communicates with the adjacent end of the chamber 6 through a pipe 22, the latter pipe being connected to the wall 4 The pipe 22 is connected by an elbow 24 with the pipe 21 and with an outlet pipe 25 having a valve 26, for a purpose to be described hereinafter.

The drum is provided at each end with a bearing ring 27 whereby the drum may be rotarily supported upon rollers 28, the drum being provided at one end with a circular rack 29 and a pinion 30 for driving said rack, the pinion 30 being operated through the ordinary pulley 31 and shafting 32, 32 and bevel gears 33, 34.

By reference to Fig. 2 it will be seen that, at a short distance from the rotary coupling 10, the pipe 9 is provided with a T, the pipe communicating with the axial arranged branch 35 thereof, while the lateral branches 36 and 37 of this T communicate respectively with pipes 38 and 39 having valves 38 and 39 therein respectively. The purpose of this construction is to enable naphtha to be supplied to the T (as through the pipe 38) and thence to either or both of the pipes 14 and 14 for the purpose of extracting the grease and subseuently to supply steam to the T (as tirough the other pipe 39) and thence through either of the pipes 14 or 14 for the purpose of volatilizing any naphtha or other solvent that may remain in a liquid state within the material in the drum. The pipes 14 and 14 thus serve in turn to conduct either the solvent or the vaporizing fluid to either or both of the distributing chambers.

' In the operation of my apparatus, the drum will be rotated so as to bring the manholes substantially vertical and the drum will then be filled as full as possible with ,tankage. The covers will be applied to the manholes and the drum will then preferablybe rotated a quarter revolution so that the chambers 6 and 6 will'be respectively at the top and the bottom of the drum with the pipe 22 leading from the bottom. Naphtha, gasolene, or other solvent liquid will be turned on to the tank and will be distributed throughout the chamber 6 into the interior of the drum, completely filling the same. After the naphtha has remained a suflicient length of time for the grease extraction, it may be withdrawn through the pipes 22 and 25 by opening the valve 26. The grease-laden solvent will be pumped through the pipe 25 to the treating tank where the grease will be recovered in the usual manner. This.operation may be repeated as often as desirable or necessary.

Sometimes it may be desirable to introduce the solvent through both of the chambers 6 and 6 or through the lower chamber; the arrangement of the valve-controlled pipes 14, 14 permits this operation. After having extracted the grease, steam will be turned onto the tank for the purpose of volatilizing any solvent that may remain in the material therewithin and the steam, laden with the vapors of the solvent, will be conducted to the condenser. Thi steam will be introduced to the tank through either or both of the connections 14, 14 generally through one only of these connectionsand will be allowed to circulate through the tank or drum, escaping-to the condenser (not shown) through either of the outlet pipes connected to the chambers 6, 6 and the pipe 16the valve 26 being closed. After the steam has passed through the tank for, say an hour, the tank is rotated for the purpose of loosening and mixing the material therewithin in order to expose it better to the further. action of the steam. Thi turning operation may be conducted without cutting off the steam. Care must be taken that, whichever of the pipes 14 or 14 may be employed in supplying steam to the drum, the diametrically opposed outlet 21 or 22 will be employed to conduct away the vapor-laden steam; otherwise the steam would pass directly through the chamber 6 or 6 to the outlet, without passing through the tank and the material distributing chambers extending substantially the length thereof, the inner wall of each chamber being perforated, an axially arranged supply pipe, a pair of branch pipes communicating with the chambers, there being a rotary connection between the supply pipe and the branch pipes, an axially arranged outlet pipe extending from the opposite end of the drum, a pipe leading from one of said chambers to such outlet pipe, a pipe leading from the other chamber to the outlet pipe, there being a rotary connection between the outlet pipe and the last two pipes,,and a separate outlet pipe for one of the last two pipes.

2. In a percolator, the combination of a cylindrical drum having 'circumferentially spaced series of perforations extending longitudinally thereof, such perforated areas forming inner walls of distributing chamhers, a plate secured to the drum outside of each series of perforations and forming the outer walls of said chambers, spacing means interposed between each of said plates and the inner wall cooperating therewith, andone or more pipes communicating with each of said chambers through said plates.

3. In a percolator, the combination of a horizontal cylindrical drum having a pair of circumferentially spaced distributing chambers extending substantially the'length thereof, said chambers being formed by plates secured to the exterior of said cylindrical drum, each of said chambers having a perforated inner wall and the drum being provided with charging and discharging openings between said chambers, a supply pipe for solvent and for a vaporizing fluid communicating with each of said chambers adjacent to one end of the drum, an outlet ipe communicating with each chamber adacent the other end of the drum, and means whereb said drum may be rotated about its-horizontal axis. 1

4.1m a percolator, the combination of a horizontal cylindrical drum having apair of circumferentially spaced distributing chambers extending substantially the length thereof, each of said chambers having a perforated inner wall and the drum being provided with charging and discharging openings between said chambers, a supply pipe for solvent and for a vaporizing fluid communicating with each of said chambers adjacent to one end of the drum, an outlet pipe communicating with each of said chambers adjacent the opposite end of the drum, a common axially arranged outlet pipe for the last two pipes, a separate outlet pipe for one of said last two pipes, valves for said pipes,

and means whereby said drum may be rotated about its axis.

5. In a percolator, the combination of a I out-let pipe communicating with the opposite end of each of said chambers adjacent the opposite end of the drum, connections where by solvent may be supplied through either of the inlet pipes, connections whereby a vaporizing fluid may be supplied through either of said pipes, a common outlet pipe for theother two pipes, and a connection extending from one of the last mentioned pipes for conducting to a suitable place of treatment the solvent which has passed through the drum.

6. A percolator comprising a shell having a distributing chamber, said chamber comprising a slot in the wall of the shell, a perforated plate secured in said slot, bars secured to the shell and surrounding .the slot, and an outer plate inclosing said bars and having edges projecting beyond the bars and secured to the shell.

7. A percolator comprising a shell having a slot in its wall, bars surrounding and overhanging the slot inwardly, a perforated plate secured to the overhanging edges of the bars, a screen covering said perforated plate, means securing said plate to said bars and adapted to compress the screen against thereof, a wall surrounding and overhanging the slot inwardly, a perforated segmental plate adapted to substantially close the slot and being secured to the parts of the wall overhanging the slot, a screen covering said plate, means securing the said plate and the screen to the wall, and an outer plate secured to the wall and to the shell and forming' the outer wall of a chamber including the inner plate and the wall.

In testimony whereof, I hereunto afiix my signature in the presence of two witnesses.

' GEORGE E. SHATTO. 1 Witnesses:

R. L. lBRUCK, G. M. FROMANT.

lllti 

